Which of the following is not caused by deficiency of mineral?

• Chlorosis

• Etiolation

• Shortening of internodes

• Necrosis

B.

Etiolation

Etiolation is a process in flowering plants when grown in partial or complete absence of light. Symptoms include- pale yellow or white colour due to lack of chlorophyll, long internodes, small and rudimentary leaves, poor development of lignified tissue.

Chlorosis is the yellowing of leaves due to lack of chlorophyll. It occurs due to lack of Manganese (Mn), Zinc (Zn) or Iron (Fe) deficiency.

Shortening of internodes ocuurs in rosette plants such as lettuce. It occurs due to deficinecy of Zinc (Zn).

Necrosis in plants is a disease in which tissues of the plants starts degenerating. It causes leaves, stem and other parts of the plants to darken and wilt. It is caused by the deficiency of Nitrogen (N), Potassium (K), Magnesium (Mg), Sulphur (S), Iron (Fe), Manganese (Mn), Zinc (Zn) and Molybdenum (Mo).